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DirectXTex: BC6H / BC 7 handling of invalid mode blocks updated to match the format specs

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This commit is contained in:
walbourn_cp 2013-07-10 10:49:59 -07:00
parent 51af8e4af5
commit b610af415e
1 changed files with 17 additions and 4 deletions
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21
DirectXTex/BC6HBC7.cpp
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@ -1240,9 +1240,21 @@ void D3DX_BC6H::Decode(bool bSigned, HDRColorA* pOut) const
else else
{ {
#ifdef _DEBUG #ifdef _DEBUG
OutputDebugStringA( "BC6H: Invalid mode encountered during decoding\n" ); const char* warnstr = "BC6H: Invalid mode encountered during decoding\n";
switch( uMode )
{
case 0x13: warnstr = "BC6H: Reserved mode 10011 encountered during decoding\n"; break;
case 0x17: warnstr = "BC6H: Reserved mode 10111 encountered during decoding\n"; break;
case 0x1B: warnstr = "BC6H: Reserved mode 11011 encountered during decoding\n"; break;
case 0x1F: warnstr = "BC6H: Reserved mode 11111 encountered during decoding\n"; break;
}
OutputDebugStringA( warnstr );
#endif #endif
FillWithErrorColors( pOut ); // Per the BC6H format spec, we must return opaque black
for(size_t i = 0; i < NUM_PIXELS_PER_BLOCK; ++i)
{
pOut[i] = HDRColorA(0.0f, 0.0f, 0.0f, 1.0f);
}
} }
} }
@ -2138,9 +2150,10 @@ void D3DX_BC7::Decode(HDRColorA* pOut) const
else else
{ {
#ifdef _DEBUG #ifdef _DEBUG
OutputDebugStringA( "BC7: Invalid mode encountered during decoding\n" ); OutputDebugStringA( "BC7: Reserved mode 8 encountered during decoding\n" );
#endif #endif
FillWithErrorColors( pOut ); // Per the BC7 format spec, we must return transparent black
memset( pOut, 0, sizeof(HDRColorA) * NUM_PIXELS_PER_BLOCK );
} }
} }